Wrench.



No. 777,934. PATBNTBD DEG. zo, 1904:

H. A. VANCE. WRENCH.

APPLICATION FILED APE. 30, 1904. N0 MODEL.

Patented December 20, 1904. i

PATENT OEEICE.

HARRY A. VANCE, OF EMPIRE, OHIO.

WRENCH.

SPECIFICATION forming part of Letters Patent N0. 777,984, dated December 20, 1904.

Application filed April 30, 1904. Serial No. 205,707.

To all whom imag concern:

Be it known that I, HARRY A. VANGE, a citi- Zen of the United States of America, residing at Empire, in the county of Jett'ersou and State of Ohio, have invented certain new and useful Improvements in IVrenCheS, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to wrenches, and more particularly that class commonly known as monkey wrenches wherein a sliding jaw is adjustably mounted upon a shank of a wrench; and it is the object of my invention to construct a wrench of this character which may be easily and quickly adjusted to any desired position and to so construct my improved wrench whereby the engaging teeth carried by the movable jaw may be removed from time to time as the saine become worn or stripped of its teeth.

v A further object of my invention is to dispense with the many complicated and small parts of wrenches heretofore used and construct a wrench of this type which will be eX- tremely simple in construction, comparatively inexpensive to manufacture, and at the same time maintaining strength whereby the durability of the wrench will be greatly increased.

. Iith the above and other objects in view reference will be had to the accompanying drawings, forming a part of this application, wherein-- Figure 1 is a side elevation of my improved wrench, a portion of 'the handle thereof being broken away. Fig. 2 is a vertical sectional view of my improved wrench. Fig. 3 is a vertical transverse sectional view taken on the line of Fig. 2. Fig'. L is an edge View of my improved wrench; and Fig. 5 is a perspective view of the adjustable jaw, a portion of said jaw 'being broken away and its appurtenant parts removed.

Reference will now be had to the accompanying drawings, wherein like numerals of reference indicate like parts'throughout the several views, and in carrying my invention into effect I employ the ordinary shank 1, having teeth 2 upon its one edge, and formed inte-I gral with this shank is a fixed jaw 3, and to the lower end of said shank is secured a suitable handle, as designated by the referencenumeral 4. Upon the shank 1 of the wrench I mount an adjustable jaw 5, inthe construction of which reside the particular features of my invention. The shape of this jaw 5 is of the ordinary contour and is provided with a slot 6, which is formed vertically of its length, and adjacent to said slot and in the edge of the body portion 7 of the jaw I form a recess 8, in which I mount a toothed bar 9, this bar being held in the recess by rivets l0 10, which pass through apertures 11 1l, formed in the sides of the jaw and in alinement with the recess 8, these rivets passing through the toothed bar 9, as indicated at 12.

rIhe jaw 5 is cut away upon its upper face, as designated at `14, and upon its lower face, as designated at l5, and intermediate the upper and lower faces of the jaw the same is cut away, as designated at 1.6, to reduce the weight of the wrench, economize in material, and by so constructing this jaw the yokes 17 and 18 are formed, which, as illustrated in Figs. 1 and 2 of the drawings, are adapted to embrace the shank 1 of the wrench and guide and sustain the jaw 5 upon the shank, the handle 4c of the wrench being removed to place the jaw 5 thereon. By this construction the jaw 5 will be loosely mounted upon the shank 1, and to lock the same thereon in any desired position I secure flat springs 18 and 19 to the rear face of the yoke 17 by a rivet 20, the spring 18' being' of a greater length than the spring 19, and the end of said spring is adapted to engage the rear face of the yoke 18.

The toothed bar 9 near its upper end is provided with a plane surface 21, the object of which will be hereinafter brought out.

The operation of my improved wrench is as follows: I/Vhen it is desired to adjust .the jaw 5 upon the shank 1, the yoke 18 is pressed inwardly against the rear edge of the shank, at which time the teeth of the toothed bar are disengaged from the teeth 2 of the shank, this operation tilting the jaw at an angle, this being permitted owing to the plane surface 21 being provided upon the toothedfbar 9, which allows a space to exist between the jaw and the shank, this tilting of the jaw being further facilitated by the spring 18' resting against IOO - the spring 19, this spring in turn being in engagement with the rear edge of the shank, and when the jaw is so tilted at an angle the same may be moved along the shank to any desired position, and upon releasing the yoke 18 the end 0i' the spring 18 will return the jaw to the upright position and force the teeth of the toothed bar 9 into engagement with the teeth lying opposite upon the shank of the Wrench.

1t will be apparent' from the foregoing description that my improved wrench is construeted upon simple lines, whereby the complicated mechanism of wrenches heretofore used is entirely dispensed with, and that by my improved construction the movable jaw may be rapidly and securely adjusted upon the shank of the wrench.

Having described my invention, I claim- 1n a wrench of the type described the combination with a wrench-shank having teeth and provided at its outer end with a lixed jaw,

of a movable jaw mounted to slide on the wrench-shank and having an interior recess in its face adjacent the teeth of the wrenchshank, a bar pinned in said recess and having a portion thereof extending beyond the outer face of the recess, said projecting portion provided with teeth engaging the'teeth of the Wrenel1-sl1ank, said movable jaw being formed with rearwardly-projeeting yokes embracing the shank, two springs secured within the upper yoke, said springs'being of unequal length, the inner spring bearing against the back of the shank and the lower end of the outer spring engaging the lower yoke on the movable jaw.

In testimony whereof I affix my signature in the presence of two witnesses.

HARRY A. VANCE.

ldlitnesses:

Ln'rITIA S. ATKINsoN, E. S. MINOR. 

